ETYM Latin, a small head.
A dense clusters of flowers or foliage: SYN. head.
In botany, a flattened or rounded head (inflorescence) of numerous, small, stalkless flowers. The capitulum is surrounded by a circlet of petal-like bracts and has the appearance of a large, single flower.
It is characteristic of plants belonging to the daisy family Compositae, such as sunflowers Helianthus, goldenrods Solidago, and dandelions Taraxacum. The individual flowers are known as florets.